package thread;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

/**
 * juc java并发包
 */
public class ThreadPoolDemo {
    public static void main(String[] args) {
        ExecutorService threadPool = Executors.newFixedThreadPool(3);
        for (int i = 0; i < 5; i++) {
            Runnable r = new Runnable() {
                @Override
                public void run() {
                    try {
                        Thread thread = Thread.currentThread();
                        System.out.println("正在执行一个任务。。。"+thread.getName());
                        Thread.sleep(5000);
                        System.out.println("执行完毕！");
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }

                }
            };

            threadPool.execute(r);
            System.out.println("有一个任务加入线程池");
        }
        threadPool.shutdown();
        //threadPool.shutdownNow();
        System.out.println("停止线程");


    }
}
